Wrong Number of CPUs reported

[Charlie Miller]

One of my customers has a Compaq Proliant server running Windows 2000
server/sp4 (actually SBS 2000) with one CPU. However, when I open Task
Manager / Performance tab, it is showing two CPUs.

I was puzzled by this when I first saw it but after spending some time
researching it and not finding an answer, I gave up.

This past weekend, the server was upgraded with a second CPU and now the
Task Manager is showing four CPUs installed.

This server has occassional, random crashes and now I am wondering if
Windows actually thinks it has four CPUs available and when it tries to use
the "third" one, it is crashing.

Any ideas would be greatly appreciated.


Charlie Miller
iTel Services of Austin

 

[Ray at]

I believe this is normal if you got those new Intel Xeon processors with the
"hyperthreading" technology that kinda "partitions" a processor into two.

Ray at work

 

[Charles]

Your Proliant Server, is it a P4 Xeon Processor? If yes,
probably because the processor is using hyperthreading
tech. so this is normal you see 2 CPU if you have only 1.
If you had 2 physical CPU's, your Windows will see 4 CPU's

Charles